Mechanical movement.



0. P. UNDERWOOD.

' MECHANICAL MOVEMENT.

APPLICATION FILED FEES, 1910.

1 116 768, Patented Nov. 10, 1914.

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i Iii Q lnvenifir OLIVER P. UNDERWOOD, OF INDIANOLA, IOWA.

MECHANICAL MOVEMENT.

, Specification of Letters Patent.

Patented Nov. 10, 1914.

I Application filed February 8, 1910. Serial No. 542,782.

To all whom it may concern Be it known that I, Onivnn P. UNonR- wooD, a.citizen of the United States, residing at India'nola, inthe county ofVVa-rrenand State of Iowa, have invented a certain new and usefulMechanical Movement, of which the following is a specification.

The object of my invention is to provide a mechanical movement of thetype adapted for use with engines having a series of parallel cylindersarranged in a circle around a central shaft which is successively movedthrough a part of a revolution by each cylinder.

My object is to provide a mechanical movement of this class of simple,durable and inexpensive construction which may be contained in a smallspace and which is not likely to get out of repair.

My invention consists in certain details, in the construction,arrangement and combination of the various parts of the device wherebythe objects contemplated are attained, as hereinafter more fully setforth, pointed out in my claim and illustrated in the accompanyingdrawings, in which the figure shows a vertical, central, sectional viewthrough a complete engine embodying my invention.

Referring to the accompanying drawings, 1 have used the referencenumeral 10 to indicate a containing casing for the engine.- Arranged atone end of this casing is a water jacket 11 and contained within thiswater jacket is a series of five cylinders indicated by the referencenumeral 12. At the head of the engine are two concentric ClIClllarchambers 13 and 14,-the former being preferably designed to communicatewith a carbureter and the latter being the exhaust chamber for theengine. Arranged inthe center of the engine casing between the cylindersis a cylindrical frame member 15 designed to receive the bearings 16 ofthe engine shaft. The engine shaft proper is indicated by the numeral 17and is mounted within the bearings 16 and has an extension 18 at one endarranged at an obtuse angle relative to the-body of the shaft andextended to a point adjacent to the rear end of the casing 10. Mountedin the central portion of the rear end of the casing 10 is a power shaft19'having fixed to it a balance wheel 20. This balance wheel has theextension 18 of the engine shaft 17 rotatably mounted in it and is alsoprovided with a boss 21 provided with an opening to receive the upperend of the extension 18. By this arrangement the shaft 17 may rotate andit will carry with it the balance Wheel 20, the end of the shaft beingso arranged that it will turn freely in the bearing of the balancewheel.

In order to impart a rotary motion to the shaft 17 by means of thereciprocating motion ofvthe engine pistons, I have provided on the part18 of the engine shaft a sleeve 23 having secured to one end a pinion 21which pinion is in mesh with a stationary pinion 25 fixed to thecylinder 15 surrounding the straight portion of the engine shaft. It isobvious that only a portion of the pinion 24: will be in mesh at onetime with the pinion 25, and when the shaft 17 is rotated the sleeve 23will be held against rotation but the sleeve together with the end 18 ofthe engine shaft will incline in various directions from the mainportion of the shaft 17 so that the teeth of the pinion 24 willsuccessively engage the teeth of the pinion 25. Mounted on the extension18, just below the boss 21, is a bearing 22 which may be of the rollertype. Formed on the upper end of the sleeve 23 is a socket to receivethe bearing 22. Formed on or fixed to the socket on the sleeve 23 is aseries of arms 26, one for each cylinder, each arm being extended in thedirection of one of said cylinders and each arm also being provided witha ball socket 27 having a detachable member 28 provided with an opening29. Detachably mounted in this ball socket is a ball 30 having an arm 31extended outwardly through the opening 29 thereof. Within each cylinderis a piston 32 of ordinary construction provided with a central crosshead 33 in which is fixed a ball socket 34 provided with a detachablemember 35 having an opening 36 therein through which the arm 31 isextended, which arm is connected to a ball 37 within said ball socket.By this arrangement a universal movement is provided for each end of thearm 31 connected respectively with the piston and with the arm" 26.Therefore when the piston moves outwardly the 7 arm 31 will pressuponthe arm 26 in such a manner as to impart a rotary movement to theinclined portion-'18'of the engine shaft and as the various pistons aresuccessively operated by explosions within their cylinders the in clinedend of the shaft 18 Will be continuously rotated.

It is obvious that-my improved mechanical movement is of extremelysimple and inexpensive construction and that a comparatively largenumber of cylinders, in the present instance five being shown, may beemployed. The number may be very easily altered to suit the requirementsof the use.

When an explosion takes place within any one of the cylinders, the fullpower imparted thereby to the'piston will be transmitted to the inclinedportion 18 of the engine shaft tending to rotate the balance wheel 20and on account of the arrangement of parts the explosions will takeplace consecutively as the engine shaft 17 is rotated so that eachcylinder in turn will have this force applied to the engine shaft ina'direction tending to rotate it at the exactly proper point in therotation of the engine shaft. Furthermore all of the arms 26 will beheld at all times in line with their respective pistons on account ofthe gearing device 2% and 25.

On account of the construction and arrangement of the boss 21, thebearing 22, the sleeve 23 and its socket, I have provided an extremelystrong and simple construction for transmitting motion from the pistonthread to the engine shaft. The arrangement of the boss, the bearing andthe socket takes up and cares for the end thrust and also the radialthrust of the arms 26 so that the sleeve 23 will at all times be held inproper position and the gear members 2i and will be properly held inmesh.

I claim as my invention:

In a device of the class described, the combination of a shaft havingone end extended at an obtuse angle relative to the body portion, saidbody portion being rotatably mounted in a suitable bearing, a balancewheel rotatably mounted and having formed thereon a boss, receiving theendof said extension, a bearing on said extension adjacent to said boss,a stationary gear wheel surrounding said body portion, ad-

jacent to the extension thereon, a sleeve mounted upon said extensionhaving at its outer end a socket in which said bearing is received, agear wheel mounted on said sleeve, in mesh at one point with saidstationary gear Wheel, a plurality of arms placed at regular intervalsupon said socket and a reciprocating member operatively connected witheach of said arms.

Des Moines, Iowa, Dec. 8, 1909.

OLIVER P. UNDERWOOD.

Witnesses:

M. B. GOLDIZEN, M. WALLACE.

